Use of the Kaufman-Assessment Battery for Children with the hearing impaired

The Kaufman-Assessment Battery for Children (K-ABC), a measure of cognitive functioning, was administered to 26 male and 24 female hearing-impaired elementary school students to determine its appropriateness for hearing-impaired children. The Wechsler Intelligence Scale for Children-Revised (WISC-R) also was administered. Scores for the present hearing-impaired sample on the K-ABC were compared with the normative group and were correlated with the WISC-R and standard achievement test scores. Results showed that both the Simultaneous Processing Scale and the Nonverbal Scale seemed appropriate for hearing-impaired children, whose scores were similar to those of the test's normative sample. Scores on the K-ABC also correlated highly with scores from the WISC-R. The Sequential Processing Scale was more problematic and not as useful. The K-ABC was significantly related to school achievement. Difficulties in the administration of the instrument with hearing-impaired children also are discussed.     

Effects of two instructional sets on the validity of the Kaufman assessment battery for children–nonverbal scale with a group of severely hearing impaired children

The purpose of the study was to investigate the use of the Kaufman Assessment Battery for Children (K-ABC)–Nonverbal Scale with severely hearing impaired children. The K-ABC was administered to 49 children enrolled at a public residential school for the deaf. Test instructions were given to one group employing American sign language (ASL), plus pantomime and gestures, while the other group received pantomime and gesture (PG) instructions only. No significant difference was found between the two group mean nonverbal K-ABC scores. Also, neither group scored significantly different from the K-ABC norms. Both groups scored significantly lower than K-ABC norms on the Spatial Memory subtest. Significant correlations were found between the K-ABC and Wechsler Intelligence Scale for Children-Revised (WISC-R). A significant correlation also was found between K-ABC scores and Reading Comprehension. A post hoc analysis of data found that, regardless of the instructional set, the children scored significantly lower on the Nonverbal K-ABC than they did on the WISC-R Performance Scale. The study provides support for the appropriateness of the K-ABC for use with deaf children.     

Normative achievement assessment of gifted children: Comparing the K-ABC,WRAT, and CAT

The Kaufman Assessment Battery for Children (K-ABC) purports to assess fluid and crystallized intelligence via processing and achievement subtests, respectively. Eight K-ABC Mental Processing and five K-ABC Achievement subtests were administered to 41 gifted students. Scores were subsequently compared to concurrent achievement measures from the California Achievement Test (CAT), as well as previously obtained mental ability measures (Wechsler Intelligence Scale for Children-Revised [WISC-R], Stanford-Binet [SB], and Wide Range Achievement Test [WRAT] achievement scores). In general, K-ABC mental ability scores were lower than WISC-R and SB IQs. K-ABC achievement scores were consistent with K-ABC mental ability scores, but more highly related to SB and WISC-R VIQ (r = .42 and .40, respectively) than to WISC-R FSIQ (r = .16) and PIQ (r = .09), or to the K-ABC Mental Processing (Composite r = .17), Simultaneous Processing (r = .08), and Sequential Processing scores (r = .20). With the exception of WRAT Word Recognition, WRAT, K-ABC, and CAT achievement scores were similar. The patterns of intercorrelations suggest that the K-ABC achievement scores are more verbally loaded than are the CAT and WRAT achievement measures.     

K-ABC content bias: Comparisons between Mexican American and White children

Content (item) bias on the Mental Processing Scales and the Achievement Scale of the Kaufman Assessment Battery for Children (K-ABC) was investigated with 100 Mexican American and 100 White fifth- and sixth-grade boys and girls. All children were English-speaking and from similar socioeconomic status (SES) backgrounds. An item-group (partial correlation) method that controlled for age, sex, and ability was used to examine bias. On the Mental Processing Scales, 17 (14%) of 120 items were found to be biased—the strong majority against the Mexican American children. On the Achievement Scale, it was observed that 58 (63%) of 92 K-ABC items were biased—all against the Mexican American sample. This latter finding is discussed in the context of possible differences in learning opportunities (language based, SES based, and school segregation) experienced by the two ethnic groups.     

Validation of the Kaufman Assessment Battery for Children with a sample of preschool children

The validity of the Kaufman Assessment Battery for Children (K-ABC) (Kaufman & Kaufman, 1983) was investigated with a sample of preschool-age children. The sample consisted of 50 subjects aged 21/2 through 4 who were distributed roughly equally by age, sex, and race according to the 1980 census. The validity of the K-ABC was examined using the Slosson Intelligence Test (SIT) (Slosson, 1982) and the Classroom Behavior Inventory-Preschool Form (CBI) (Schaefer & Edgerton, 1978) as criterion measures. The SIT and CBI-Preschool Form Verbal Intelligence Scale were found to correlate significantly (p<.01) with the global scales of the K-ABC. The K-ABC did not differentiate between age or sex groups, but blacks scored lower than whites. The findings are supportive of previous validity studies (Kaufman & Kaufman, 1983) and two-factor theories of intelligence (e.g., Das, Kirby, & Jarman, 1975).     

The relationship between the Wechsler Intelligence Scale for Children-Revised and the Wechsler Intelligence Scale for Children-III scales and subtests with gifted children

Each year thousands of children are evaluated or reevaluated utilizing the current edition of the Wechsler Intelligence Scale to determine their eligibility for gifted programs. The Wechsler Intelligence Scale for Children-III (1991) is new enough that only limited research is available on how it compares to the previously used Wechsler Intelligence Scale for Children-Revised (1974). The purpose of this study was to determine the comparability between the previously dominant intelligence scale, the WISC-R, and the revised WISC-III with gifted children. The results of this study indicate that the latest revision (WISC-III) and the earlier version (WISC-R) produce remarkably similar scale and subtest scores when administered under clinical conditions to gifted children. All 51 children determined eligible through the administration of one of these two Wechsler tests would have been eligible for services had the other test been administered. The Verbal and Performance scale IQ scores were within two points of each other across the two test administrations, while only a one-point difference existed between the Full Scale IQ scores. The Arithmetic, Comprehension, and Object Assembly subtest scores were in high agreement across the two administrations (p<.01). The level of agreement between some subtests across the two administrations suggests that clinical judgment is just as important as scores in considering who is eligible for gifted programs.     

Concurrent validity of the Stanford-Binet: Fourth edition and Kaufman assessment battery for children with learning-disabled students

This study examined the concurrent validity of the composite and area scores of the Stanford-Binet Intelligence Scale: Fourth Edition (SBIV) and the Mental Processing Composite and global scale scores of the Kaufman Assessment Battery for Children (K-ABC). The tenability of interpreting the SBIV using the fluid/crystallized model, as suggested by the authors, was also considered. The subjects were 30 Black, learning-disabled elementary school students. Results of a t test indicated that the Mental Processing Composite score of the K-ABC was significantly higher than the SBIV Composite score. Moderate to high correlations were obtained when SBIV composite and area scores were compared to K-ABC composite and scale scores, reflecting a positive relationship between the two tests. The measures of fluid abilities (K-ABC Composite score; SBIV Abstract/Visual Reasoning) were highly correlated. The results of a multiple regression analysis indicated a moderate degree of correlation among the measures of crystallized ability (K-ABC Achievement; SBIV Verbal Reasoning and Quantitative Reasoning). The findings of this study demonstrated adequate concurrent validity for the SBIV. In addition, the results provided limited support for describing test results utilizing the fluid/crystallized interpretation model. Further research is suggested in order to examine other validity issues, such as classification of special education students and the SBIV's relationship to other similar instruments.     

Validity of the K-ABC for a black preschool population

The validity of the Kaufman Assessment Battery for Children (K-ABC) was investigated with a sample of Black low SES preschool children. The sample consisted of 38 Black children who were enrolled in a Head Start program. The Stanford-Binet Intelligence Scale (SB-LM) was used as a criterion against which to compare K-ABC scores. While some support was obtained for the convergent and construct validity of the K-ABC, the results of this study suggest it may be no more culture fair for Black preschool children than is the SB-LM.     

The performance of learning disabled children on the Kaufman assessment battery for children and the Bender-Gestalt test

Results of the K-ABC and Bender-Gestait Test were compared for a sample of LD children that included 24 blacks and 24 whites: mean age 9 years, SD = 1–2. A nonsignificant difference was found between the mean scores of the K-ABC Sequential and Simultaneous Scales. A significant (p<.01) correlation coefficient was found between the K-ABC Simultaneous Scale and the Bender-Gestalt Test error score (r = −.57). A nonsignificant correlation coefficient was found between the K-ABC Sequential Scale and the Bender-Gestalt Test error score (r = −.20). Implications of these findings are discussed.     

Construct validity of the Kaufman assessment battery for children with learning disabled and mentally retarded

This study investigated the construct validity of the Kaufman Assessment Battery for Children (K-ABC) via correlational procedures with the WISC-R. Thirty-two special population children selected from kindergarten through grade five participated in the study; 19 children were diagnosed as learning disabled, 13 as educable mentally retarded. A high relationship between the WISC-R FSIQ and the K-ABC Mental Processing composite revealed evidence of construct validity in the measurement of intelligence. The K-ABC diagnosed the learning disabled but failed to diagnose the mentally retarded children. The K-ABC Sequential Processing Scale appeared to offer a unique construct (analytic, temporal sequencing) not measured by the WISC-R. Implications for the usefulness of the K-ABC are discussed.     

Patterns of intellectual differences of black,hispanic, and white children

Patterns of intellectual differences among children of different ethnic groups on the Wechsler Intelligence Scale for Children-Revised (WISC-R) were examined. Full Scale IQ was used as a covariate in a multivariate analysis of covariance. The results indicated that when overall IQ is held constant, Black children perform better on verbal tasks, Hispanic children perform better on visual-spatial tasks, and White children perform better on tasks requiring abstract thinking and knowledge of facts. The implications of these results regarding assessment practices are discussed.     

The concurrent validity of the Cognitive Levels Test with the Wechsler Intelligence Scale for Children-Revised for a sample of referred children and youth

The present investigation compared the Cognitive Levels Test (CLT) and the Wechsler Intelligence Scale for Children-Revised (WISC-R) scores for 55 children who were referred for remedial educational services. A comparison of the correlations for each of the criterion measures from the WISC-R showed a consistent significant positive relationship with the CLT. A repeated measures analysis of variance that compared standard scores for the CLT with those of the WISC-R indicated that significant differences existed between WISC-R IQs and the CLT Cognitive Index. Implications concerning the validity of the Cognitive Levels Test are discussed.     

Evidence of bias in predictive validity on the Kaufman assessment battery for children in samples of Anglo and Mexican American children

Possible bias in the differential predictive validity of the Kaufman Assessment Battery (K-ABC) was investigated with 76 Anglo and 90 Mexican American fifth- and sixth-grade boys and girls. All children were English-speaking and from similar socioeconomic backgrounds. The criterion variable was the Comprehensive Tests of Basic Skills (CTBS; Language, Reading, Mathematics, and Total Scores). Several statistical techniques were used to investigate test bias (examination of predictive validity coefficients; two methods of examining homogeneity of slopes of the regression lines). The results showed considerable evidence of bias in differential predictive validity, indicating that the global cognitive score of the K-ABC (the Mental Processing Composite) was less effective in predicting CTBS scores for the Mexican American group than for the Anglo group.     

IQ,grit, and academic achievement: Evidence from rural China

Promoting an educated labor force is critical for emerging economies. Educational achievement, in turn, depends heavily on general cognitive abilities as well as non-cognitive skills, such as grit. Current research, however, has not examined how cognition and grit may explain the academic performance of students in an economically disadvantaged context. Thus, this study examines how IQ and grit contribute to academic achievement gains for students in poor areas of rural China. Drawing on data from 2931 students in rural China, we measure general cognitive ability, using the Wechsler Intelligence Scale for Children, Fourth Edition (WISC-IV) and Raven’s Standard Progressive Matrices (Raven IQ); non-cognitive ability, using the Short Grit Scale; and academic achievement, using a curricular-based mathematics exam. We find that IQ and grit each predict achievement gains for the average student. Grit is not positively associated with achievement gains among low-IQ students, however, suggesting that grit does not translate into academic achievement gains for students with delays in general cognitive ability.     

韦氏儿童智力量表第四版对学习障碍评估和干预的价值

学习障碍儿童在基本的听、说、读、写、算等认知加工过程上存在困难,不同类型的学习障碍儿童在韦氏智力量表上的表现具有特异性,这是由于韦氏智力量表的内在结构与一些特定的认知加工过程有关。为加强韦氏智力量表的临床效应,第四版(WISC-IV)在结构、内容、功能等方面进一步优化调整,更加突出了量表对特殊学习者和情绪及行为障碍儿童的临床辨别力不同类型的学习障碍儿童在韦氏智力量表第四版特定分量表及特定的合成指数和认知加工指数上有特异性表现,这既可以成为临床辅助评估的出发点,同时也可以为不同类型的学习障碍儿童的个体化认知加工训练提供参考。     

The relationship between young children's academic achievement and measures of intelligence

To test the construct validity of brief measures of intelligence and explore how well these instruments relate to academic performance, the WPPSI-R, the Kaufman Brief Intelligence Scale (K-BIT), Draw-A-Person: Quantitative Scoring System (DAP:QSS), and the K-ABC Achievement Scale were administered to 50 kindergarten and first-grade children. Results indicated that all measures provide similar scores, all in the average range. All brief measures related significantly to academic achievement. Implications of the findings are discussed, and a battery for screening young children is offered.     

A comparison of the Vane Kindergarten Test with the WPPSI and a measure of Self-Control

This study assessed the concurrent validity of the Vane Kindergarten Test (VKT), using scores on the Wechsler Preschool and Primary Scale of Intelligence (WPPSI) as the criterion measure. In addition, VKT scores were correlated with kindergarten grades and the Self-Control Rating Scale (SCRS). The results indicated that the VKT could be used as a valid screening measure for kindergarten children, but that it tended to overestimate ability and was not a test independent of a child's ability for self-contorl.     

Differences between WISC‐R and WISC‐III performance scale among children with ADHD

Reviews involving the Wechsler Scales for children suggest that Full Scale IQ scores on the Wechsler Intelligence Scale for Children, Third Edition, average 5 to 6 points lower than scores on the second edition of the scale [WISC‐R, Wechsler, D. (1974). Zimmerman & Woo‐Sam, 1997], with the differences distributed disproportionately over subtests, i.e., with larger discrepancies found within the Performance Scale (Wechsler, 1991). Changes on the revised subtests of the WISC‐III Performance Scale may place children with ADHD at a disadvantage compared to their performance on analogous WISC‐R subtests. We examined IQ test performance in 122 unmedicated children with ADHD (61 given the WISC‐R, 61 given the WISC‐III), and 46 children from a healthy, comparison group (23 given the WISC‐R, 23 given the WISC‐III). The ADHD and comparison group samples were matched for sex and for Verbal IQ between WISC‐R and WISC‐III. Children with ADHD had significantly lower Performance IQ on WISC‐III compared to the WISC‐R, with the Picture Arrangement subtest showing the most significant difference. In contrast, there were no significant differences between the WISC‐R and WISC‐III cohorts on Performance IQ or any Performance subtests among the comparison group. These findings highlight the importance of examining the comparability of ability test revisions among clinical and non‐clinical populations, and will be especially salient when the WISC‐III is revised. © 2003 Wiley Periodicals, Inc. Psychol Schs 40: 331–340, 2003.     

An investigation of the K-ABC,WISC-R,and W-JPB,part two,with learning disabled children

The purpose of this study was to examine the relationship of the Kaufman Assessment Battery for Children (K-ABC), the WISC-R, and the Woodcock-Johnson Psychoeducational Battery (W-JPB), Part Two, with children who experience learning disabilities. Correlational analyses were used to examine relationships among the WISC-R, K-ABC Mental Processing and Achievement scales, and the W-JPB Achievement scales. Thirty-four children with learning disabilities (mean age 8–11 years) received all three measures. Correlation coefficients indicated stronger and more consistent relationships between the WISC-R and W-JPB Achievement tests than between the K-ABC and W-JPB Achievement tests. Significant relationships between the WISC-R Full Scale IQ and the K-ABC Mental Processing Composite (MPC) revealed evidence of validity for this learning disabled sample. However, correlation coefficients among the K-ABC Achievement subtests and the W-JPB Achievement clusters indicated both convergent and discriminant validity. Thus, it is suggested that both the K-ABC MPC, for assessment of cognitive abilities, and the W-JPB Achievement clusters could be employed in discrepancy formulas for special education placement of children with learning disabilities.     

The comparability of the Test of Cognitive Skills with the Wechsler Intelligence Scale for Children-Revised and the Stanford-Binet: Fourth edition with gifted children

The comparability of the Test of Cognitive Skills (TCS) with the Wechsler Intelligence Scale for Children-Revised (WISC-R) and the Stanford-Binet Intelligence Scale: Fourth Edition (SBIV) with 75 elementary- and middle-school-aged gifted students was investigated. Results indicated that the mean Cognitive Skills Index was about 6 points higher than the WISC-R FSIQ and about 9 points higher than the SBIV Composite score. Correlation coefficients between the TCS Cognitive Skills Index and the SBIV Composite score and the WISC-R FSIQ were.51 and.41, respectively. Absolute differences between individual scores revealed that 44% of the students' SBIV Composite scores were more than 10 points different than their Cognitive Skills Index, and 28% of the students' WISC-R FSIQ scores were more than 10 points different. The results indicated limited comparability between the TCS and WISC-R and SBIV. The implications of these findings and future research questions are discussed.